“What is this chair for? It was at a school.”
Answer: "This is a chair for children with disabilities, common in special education rooms. The straps help a child with poor muscle tone stay upright, and the pommel keeps a child’s legs from scissoring if they have high muscle tone. The tray in the background helps them stay upright by giving them somewhere to rest their arms and also allows them to do their schoolwork."
Like your explanation better.